首页|泵用微连通对称双卸荷槽及其困油与流量特性

泵用微连通对称双卸荷槽及其困油与流量特性

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  • 国家科技期刊平台
  • NETL
  • NSTL
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为了充分提高外啮合齿轮泵的困油性能和完善双卸荷槽的现有设置理论,提出了一种双卸荷槽微连通对称设置的创新结构,并以常规无连通对称设置的双矩形卸荷槽为例,依次给出了创新结构的实现方法,构建了困油压力和理论流量的计算模型,比较分析了常规结构和创新结构下的困油压力、排量损失以及流量脉动质量等.结果表明:啮合点位置越接近最小困油容积位置,创新结构下的卸荷面积越大,突出解决了常规结构下该处的零卸荷面积问题;通过充分缓和常规结构下的困油压力,创新结构有效地避免了困油的高压冲击与低压气穴所造成的危害;相对于常规结构,创新结构的理论排量稍有下降,流量脉动有所加剧等.研究结果可为齿轮泵的优化设计提供参考.
Oil trapping and flow rate characteristics under micro-connection and symmetry layout of relief grooves in external gear pump
In order to fully improve the oil trapping performance of external gear pump and perfect the existing setting theory of double relief grooves,an innovative structure of micro-connection and symmetry layout of relief grooves was proposed.Taking the no-connection and symmetry layout of conventional rectangular relief groove as an example,firstly,the embodiment method of innovative structure was given,secondly,the calculation model of oil trapping pressure and theoretical flow rate was established,and finally,the oil trapping pressure,displacement loss and flow pulsation under no-connection layout and micro-connection layout were comparatively analyzed.Example results show that the closer the meshing point is to the location of minimum oil trapping volume,the larger the relief area in the innovative structure is,which emphatically solves the problem of zero relief area at this point under no-connection layout;the innovative structure can fully alleviate the problem of oil trapped phenomenon in conventional structure and effectively avoid the harm caused by high-pressure impact and low-pressure cavitation;compared with the conventional structure,the theoretical displacement of the innovative structure decreases slightly,and the flow pulsation greatly increases,etc.The research results can provide reference for the optimization design of gear pumps.

external gear pumpdouble relief-groove with micro-connectiondouble relief-groove without connectionoil trapping characteristicsflow-rate characteristics

刘萍

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宿迁学院,江苏宿迁 223800

外啮合齿轮泵 微连通双卸荷槽 无连通双卸荷槽 困油性能 流量特性

2023年江苏省产学研项目宿迁市科技计划项目宿迁学院创新团队项目

BY20231206Z20231392021td07

2024

10.3969/j.issn.1005-0329.2024.04.008

流体机械
中国机械工程学会

流体机械

CSTPCD北大核心
影响因子：1.418
ISSN：1005-0329
年,卷(期)：2024.52(4)
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